2006 International Conference on Microwaves, Radar & Wireless Communications最新文献

{"title":"Instantaneous Frequency Measuring Receiver for L band","authors":"J. Kus","doi":"10.1109/MIKON.2006.4345392","DOIUrl":"https://doi.org/10.1109/MIKON.2006.4345392","url":null,"abstract":"This paper presents the design, parameters and results of measurements 6-bits IFM receiver for L band. The device is a complete solution, including limiting amplifier, trigger circuit and a circuit detecting whether a given frequency is out of band (OOB). This receiver is based on one microwave frequency discriminator.","PeriodicalId":315003,"journal":{"name":"2006 International Conference on Microwaves, Radar & Wireless Communications","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128382373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-Speed DDS-Based Generator of Pulses with an Arbitrary Frequency Modulation","authors":"A. Lewandowski, K. Kucy, D. Startek","doi":"10.1109/MIKON.2006.4345120","DOIUrl":"https://doi.org/10.1109/MIKON.2006.4345120","url":null,"abstract":"We present design and performance verification of a high-speed programmable pulse generator based on an integrated direct digital synthesizer (DDS). The generator can produce pulses with an arbitrary frequency modulation, instantaneous frequency up to 140 MHz, and widths ranging from microseconds to milliseconds. The pulses can be formed into arbitrary sequences with the minimum spacing of 150 ns. We experimentally verify performance of the generator for pulses with the linear frequency modulation (LFM), obtaining an excellent performance in terms of the compression ratio and side-lobes level. We also demonstrate the ability of our generator to produce pulses with a nonlinear frequency modulation (NLFM). Experimental analysis of an exemplary NLFM pulse produced by the generator confirms that NLFM allows to reduce the side-lobes level without deteriorating the compression ratio.","PeriodicalId":315003,"journal":{"name":"2006 International Conference on Microwaves, Radar & Wireless Communications","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126476734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-Resolution Radars for Environmental Studies","authors":"D. Vavriv","doi":"10.1109/MIKON.2006.4345108","DOIUrl":"https://doi.org/10.1109/MIKON.2006.4345108","url":null,"abstract":"Recent advances in the design and realization of high-resolution radars for environmental studies are discussed. Two types of such instruments are considered: Doppler, millimeter-wave meteorological radars and an airborne SAR system, which have been developed at the Institute of Radio Astronomy of the National Academy of Sciences of Ukraine. The meteorological radars have been designed for long-term, unattainable operation at remote locates. The SAR system benefits essentially from a novel algorithm, which enables the estimation of the antenna beam orientation angles directly from the radar returns. The SAR with this technique introduced can be operated from small aircrafts without using of a complicated navigation system. The set-up of these instruments, the technical solutions, and the signal processing techniques introduced are discussed. The results obtained during measurement campaigns are presented as well.","PeriodicalId":315003,"journal":{"name":"2006 International Conference on Microwaves, Radar & Wireless Communications","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125567263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient Method for Obtaining Derivatives of Current Vector for AWE Techniques","authors":"M. Surma","doi":"10.1109/MIKON.2006.4345201","DOIUrl":"https://doi.org/10.1109/MIKON.2006.4345201","url":null,"abstract":"In this paper, the improved asymptotic waveform evaluation (AWE) are outlined as the efficient, based on method-of-moments, technique for obtaining broad-band response of the radiators/scatterers. The proposed approach allows to make conventional AWE techniques more effective with respect to time of analysis and memory requirements. The technique consists in fast algorithm for evaluation of impedance matrix derivatives and current vector derivatives, i.e. the most important elements for AWE technique.","PeriodicalId":315003,"journal":{"name":"2006 International Conference on Microwaves, Radar & Wireless Communications","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126271451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiometric Complex for Determination Man Temperature Profile","authors":"I. Bragin, V. P. Sgibnev, S. I. Bragin, T. B. Shevaldykina, M. B. Kamenkov, N. Maslova, E. L. Elizavetova, I. V. Istyakov, J.B. Bragina, D. Khidasheli, Y. Zhou, F. Zerrouk","doi":"10.1109/MIKON.2006.4345173","DOIUrl":"https://doi.org/10.1109/MIKON.2006.4345173","url":null,"abstract":"The article shows the way to decrease temperature measurement error by reduction of influence of reflection coefficient from skin. The scheme of a radiometric receiver with feedback in high frequency section is represented. This kind of scheme compensates signal decrease due to antenna mismatch. The article provides a description of the radiometric complex structure.","PeriodicalId":315003,"journal":{"name":"2006 International Conference on Microwaves, Radar & Wireless Communications","volume":"33 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120993841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel probe design for near field microwave and millimeter wave nondestructive testing techniques","authors":"I. Ivanchenko, N. Popenko, R. Chernobrovkin","doi":"10.1109/MIKON.2006.4345378","DOIUrl":"https://doi.org/10.1109/MIKON.2006.4345378","url":null,"abstract":"Based on the numerical modeling the novel probe design for near field measurements is presented. The optimal electrodynamic characteristics of this probe with the dielectric insertion as melting quartz have been determined. It has been shown that the use of Teflon layer provides a good matching of wave impedances of the empty standard waveguide and reduced one. The testing probe instrument functions have been determined and expected values of resolving capacity are evaluated.","PeriodicalId":315003,"journal":{"name":"2006 International Conference on Microwaves, Radar & Wireless Communications","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123570486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parametric Optimization of Transition from Square Waveguide to Bifurcated Waveguide","authors":"F. Dubrovka, K. Naumenko, M. Rusov","doi":"10.1109/MIKON.2006.4345193","DOIUrl":"https://doi.org/10.1109/MIKON.2006.4345193","url":null,"abstract":"The problem of finding an optimal shape and geometry of the transition from square waveguide to bifurcated waveguide is considered.","PeriodicalId":315003,"journal":{"name":"2006 International Conference on Microwaves, Radar & Wireless Communications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126530577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulation Optimization of Electromagnetic Structure - Case Study","authors":"P. Miazga","doi":"10.1109/MIKON.2006.4345308","DOIUrl":"https://doi.org/10.1109/MIKON.2006.4345308","url":null,"abstract":"Merging optimization techniques and simulation technologies presents an opportunity for creation of optimal structure, bypassing expensive and time consuming process of model construction and measurement. However simulation process for a complicated circuit may take significantly long time, which grows with increasing of model accuracy. Optimization process may call for simulation (depending on count of varying parameters, and circuit behavior) tens, hundreds or even thousand times. The two design requirements: create project in a reasonable time with a reasonable accuracy, conflict one with each other. In practice the design engineer insist on using the fastest simulation model possible. The trap associated with this approach is discussed in presented paper. An influence of simulation model accuracy on convergence of optimization process and exactness of the final result is discussed.","PeriodicalId":315003,"journal":{"name":"2006 International Conference on Microwaves, Radar & Wireless Communications","volume":"142 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129271378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Implementation of differential repeat-pass SAR interferometry for (i) the search for earthquake precursory land-cover deformation in Taiwan in co-ordination with the integrated Search for Taiwanese Earthquake Precursors iSTEP' Taiwanese program for promoting research excellence; and (ii) the assessm","authors":"W. Boerner, Kun Shan Chen","doi":"10.1109/MIKON.2006.4345104","DOIUrl":"https://doi.org/10.1109/MIKON.2006.4345104","url":null,"abstract":"Worldwide, medium-to short-term earthquake prediction is becoming ever more essential for safeguarding man due to an un-abating population increase, but hitherto, there have been no verifiable methods of reliable earthquake prediction developed -except for a few isolated examples of such in China and in Greece. This dilemma is a result of previous and still current approaches to earthquake prediction which are squarely based on the seismic measurement of crustal movements, observable only after a tectonic stress-change discharge (earthquake) has occurred. The prediction models derived from past histories of measurements were mainly carried out during the past 40-50 years, although initiated soon after the San Francisco earthquake of 1906. During the past decade it was proved and shown that it is not possible to derive reliable models for earthquake predictions from crustal movement measurements alone - as valuable and as indispensable those indeed are - and that an entirely new approach must be taken and rigorously pursued over many years and decades to come, and most likely throughout this twenty-first century. Of considerable importance will be the full integration of multi-band (P-K Band) repeat-pass differential interferometric Polarimetric Synthetic Aperture Radar (POL-SAR) space borne and high-altitude platform monitoring operations which will be considered here in conjunction with \"seismo-electromagnetic \" ground measurements. It will be shown that Taiwan is ideally suited for studying earthquake related electromagnetic precursor studies in that the island is separated from other continental regions, and there exist the resources, the dedication and will power for advancing our knowledge most rapidly. Both land-based and sub-oceanic measurement networks already exist, which need to be upgraded and perfected. With the aid of experienced and knowledgeable experts, this will be done soon.","PeriodicalId":315003,"journal":{"name":"2006 International Conference on Microwaves, Radar & Wireless Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129987156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A T-Based Lifetime Maximization Algorithm for Ad-Hoc Networks","authors":"Chen Tianzhou, Lou Jizhou, Huang Jiangwei","doi":"10.1109/MIKON.2006.4345205","DOIUrl":"https://doi.org/10.1109/MIKON.2006.4345205","url":null,"abstract":"This paper introduces a t-weighted routing algorithm to maximize the lifetime of ad-hoc networks. We consider the weight t of an edge as two parts: the time remaining for the transmission node to transmit data, and the time remaining for the receiving node to receive and forward data. To get the value of t, we apply a method called one node look-ahead (ONL). Then we bring forward a power-aware routing algorithm based on t to maximize the lifetime of networks. Simulation results show that our t-based lifetime maximization algorithm has a great effect on the improvement of ad-hoc networks' lifetime.","PeriodicalId":315003,"journal":{"name":"2006 International Conference on Microwaves, Radar & Wireless Communications","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127193846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}